MCQ ON PLACENTA class 12 for NEET

MCQ ON PLACENTA class 12 for NEET | PLACENTA class 12 | MCQ PLACENTA with Answer | Check the below NCERT MCQ question for class 12 Biology based on the with Answers.

MCQ ON PLACENTA class 12 for NEET

MCQ ON PLACENTA class 12 for NEET

MCQ on PLACENTA class 12 Biology with answers were prepared based on the latest pattern.We have provided class 12 Biology MCQs questions on PLACENTA with Answers to help students understand the concept very well.

MCQ ON PLACENTA is useful for NEET / CSIR / UGC / CBSE / ICSE / AIIMS / EXAM / AFMC EXAM / STATE LEVEL MEDICAL EXAM 2022-23, 2023-24

Introduction:-
Placenta is structure produced by fusion of uterine endometrium with extra embryonic foetal membranes like chorion , for physiological exchange between foetus and mother’s blood. It has two parts maternal and foetal. Classified variously
According to nature of foetal membranes involved, placenta is of three types:-
a.chorio – vitelline placenta – it is formed from yolk sac and chorion e.g.kangaroo.
b.Chorio- allantoic placenta- it is derived from both allantois and chorion e.g. marsupial
c.chorionic placenta- it consists of chorion alone e.g. humans

Nature of maternal and foetal tissues –
a.epithelio – chorial placenta
b. Syndesmo – chorial placenta
c.endothelio – chorial placenta
d.Haemo- chorial placenta
e.haemoendothelial placenta

Nature of uterine wall at birth
a.nondeciduate placenta
b.deciduate placenta
c.contra – deciduate placenta

Nature of arrangement of Villi
a.diffuse placenta
b.cotyledonary placenta
c.intermediate placenta
d.zonary placenta
e.discoidal placenta
f.metadiscoidal placenta

MCQ ON PLACENTA class 12 for NEET

1. Placenta formed from yolk sac and chorion

(a) chorio – vitelline placenta
(b) chorio- vitelline placenta
(c) chorio- allantoic placenta
(d) all the above

Ans (a) chorio- vitelline placenta

2. Marsupial bandicoot and all eutherian except humans have

(a) chorio – vitelline placenta
(b) chorio- allantoic placenta
(c) chorionic placenta
(d) cross pollination

Ans. (b) chorio- allantoic placenta

3. Humans have

(a) chorionic placenta
(b) haemo- chorial placenta
(c) endothelial – chorial placenta
(d) all the above

Ans. (a) chorionic placenta

4. In rat , rabbit and pig contains

(a) haemo-endothelial placenta
(b) haemo- chorial placenta
(c) chorionic placenta
(d) zonary placenta

Ans.(a) haemo-endothelial placenta

5. Many mammals contains

(a) nondeciduate placenta
(b) deciduate placenta
(c) diffuse placenta
(d) centro – deciduate placenta

Ans.(b) deciduate placenta

6. The villi are distributed uniformly along the entire surface of chorio-allantois placenta

(a) cotyledonary placenta
(b) diffuse placenta
(c) intermediate placenta
(d) zonary placenta

Ans.(b) diffuse placenta

7. Tiger ,lion ,cat ,dog ,elephant
have
(a) diffuse placenta
(b) zonary placenta
(c) intermediate placenta
(d) discoidal placenta

Ans.(b) zonary placenta

8. Intermediate placenta is found in

(a) camel
(b) giraffe
(c) both a and b
(d) tiger

Ans.(c) both a and b

9. Cotyledonary placenta occurs in

(a) cow
(b) buffalo
(c) sheep and goat
(d) all the above

Ans. (d) all the above

10. Type of placenta is formed in humans by

(a) amnion
(b) allantois
(c) chorion
(d) all the above

Ans. (c) chorion

11. Membrane that gives protection to embryo from external shocks is

(a) amnion
(b) allantois
(c) chorion
(d) placenta

Ans.(c) chorion

12. Foetus is attached to uterine wall by

(a) placenta
(b) chorionic
(c) teratogenic
(d) mesoderm

Ans . (a) placenta

13. Placenta is connected to foetus by a rope like structure

(a) umbilical cord
(b) amniotic sac
(c) amniotic fluid
(d) corpus luteum

Ans.(a) umbilical cord

14. Umbilical cord is mainly formed of

(a) amnion
(b) allantois
(c) chorion
(d) all the above

Ans. (b) allantois

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15. hCG hormone is secreted by

(a) placenta
(b) uterus
(c) ovum
(d) ovary

Ans.(a) placenta

16. Which acts as barrier as well as ultrafilter between foetus and mother is

(a) uterus
(b) fallopian tube
(c) ovary
(d) placenta

Ans.(d) placenta

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Balram Saw

My name is Balram Saw and by profession, I am a lecturer. I did my masters in M.sc Zoology. On this blog, I share all the information related to biology.

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